ConfigRead

Author: Instructor (talk, contrib)

Page for NSIS 2.07 and below users

You can use the latest version of headers (recommended) or the following function code (put the function code in your script before calling it)

Function Description

____________________________________________________________________________
 
                            ConfigRead v1.0
____________________________________________________________________________
 
 
Read value from entry name in config file.
 
 
Syntax:
${ConfigRead} "[File]" "[Entry]" $var
 
"[File]"      ; config file
              ;
"[Entry]"     ; entry name
              ;
$var          ; Result:  Value
 
 
Note:
-Error flag if file isn't exist

Example1:

Section
	${ConfigRead} "C:\AUTOEXEC.BAT" "SET winbootdir=" $R0
	;$R0=C:\WINDOWS
SectionEnd

Example2:

Section
	${ConfigRead} "C:\apache\conf\httpd.conf" "Timeout " $R0
	;$R0=30
SectionEnd

Function Code

Function ConfigRead
	!define ConfigRead `!insertmacro ConfigReadCall`
 
	!macro ConfigReadCall _FILE _ENTRY _RESULT
		Push `${_FILE}`
		Push `${_ENTRY}`
		Call ConfigRead
		Pop ${_RESULT}
	!macroend
 
	Exch $1
	Exch
	Exch $0
	Exch
	Push $2
	Push $3
	Push $4
	ClearErrors
 
	FileOpen $2 $0 r
	IfErrors error
	StrLen $0 $1
	StrCmp $0 0 error
 
	readnext:
	FileRead $2 $3
	IfErrors empty
	StrCpy $4 $3 $0
	StrCmp $4 $1 0 readnext
	StrCpy $0 $3 '' $0
	StrCpy $4 $0 1 -1
	StrCmp $4 '$\r' +2
	StrCmp $4 '$\n' 0 close
	StrCpy $0 $0 -1
	goto -4
 
	error:
	SetErrors
 
	empty:
	StrCpy $0 ''
 
	close:
	FileClose $2
 
	Pop $4
	Pop $3
	Pop $2
	Pop $1
	Exch $0
FunctionEnd